God has to be more important to us than anything else for obvious reasons. So we must take him seriously. I do see Christians who live a rather casual Christian life. To please God, being lukewarm is not good enough. You must set your heart afire, and the only way to achieve that is to let the Holy Spirit fill you to the brim, for you cannot do it on your own. By the way, to be evil, you don't need God's help; but to be holy, you need all of his help. It all comes down to how willing you are to let God rightfully be your God. In this "game," if you want to win, you lose; but you are willing to lose, you win. Let God take charge of you and he'll set your heart on fire with the Holy Spirit.